import { Project } from '../models/project.js';
import { Task, LegacySubtask, TaskHierarchy } from '../models/task.js';
import { Subtask } from '../models/subtask.js';
/**
* Storage interface for the task management system
* Version 2.0: Updated for unified task model with migration support
*/
export interface Storage {
// Project operations
getProjects(): Promise<Project[]>;
getProject(id: string): Promise<Project | null>;
createProject(project: Project): Promise<Project>;
updateProject(id: string, updates: Partial<Project>): Promise<Project | null>;
deleteProject(id: string): Promise<boolean>;
// Task operations (unified model)
getTasks(projectId?: string, parentId?: string): Promise<Task[]>;
getTask(id: string): Promise<Task | null>;
createTask(task: Task): Promise<Task>;
updateTask(id: string, updates: Partial<Task>): Promise<Task | null>;
deleteTask(id: string): Promise<boolean>;
deleteTasksByProject(projectId: string): Promise<number>;
deleteTasksByParent(parentId: string): Promise<number>;
// Task hierarchy operations
getTaskHierarchy(projectId?: string, parentId?: string): Promise<TaskHierarchy[]>;
getTaskChildren(taskId: string): Promise<Task[]>;
getTaskAncestors(taskId: string): Promise<Task[]>;
moveTask(taskId: string, newParentId?: string): Promise<Task | null>;
// Legacy subtask operations (deprecated, for migration only)
/** @deprecated Use getTasks with parentId instead */
getSubtasks(taskId?: string, projectId?: string): Promise<Subtask[]>;
/** @deprecated Use getTask instead */
getSubtask(id: string): Promise<Subtask | null>;
/** @deprecated Use createTask instead */
createSubtask(subtask: Subtask): Promise<Subtask>;
/** @deprecated Use updateTask instead */
updateSubtask(id: string, updates: Partial<Subtask>): Promise<Subtask | null>;
/** @deprecated Use deleteTask instead */
deleteSubtask(id: string): Promise<boolean>;
/** @deprecated Use deleteTasksByParent instead */
deleteSubtasksByTask(taskId: string): Promise<number>;
/** @deprecated Use deleteTasksByProject instead */
deleteSubtasksByProject(projectId: string): Promise<number>;
// Migration operations
migrateToUnifiedModel(): Promise<{ migratedSubtasks: number; errors: string[] }>;
getMigrationStatus(): Promise<{ needsMigration: boolean; subtaskCount: number; version: string }>;
}
/**
* Data structure for the storage file
* Version 2.0: Supports both legacy and unified models during migration
*/
export interface StorageData {
projects: Project[];
tasks: Task[];
/** @deprecated Legacy subtasks, will be migrated to tasks */
subtasks?: Subtask[];
/** Migration metadata */
migration?: {
version: string;
migratedAt?: string;
subtasksMigrated?: number;
};
}
